JZX891 data transmission module is a high-integration micro-power half-duplex wireless data transmission module, which adopts “SI” high-performance RF chip and high-speed single chip microcomputer. The module provides 8 channels, adopts national measurement frequency points, and is equipped with professional setting software for users to change parameters. The module adopts transparent transmission mode, and can transmit data of any size without the need for users to write setting and transmission programs. The module is small in size, wide in operating voltage and convenient to use.Besides, we can’t ignore. radio Module It has injected new vitality into the development of the industry and has far-reaching significance for activating the market. https://www.hkulike.com/

　　

　　Functional features:

　　

　　* Working frequency is 470-510MHz.

　　

　　* Transmission distance is 1500m (1200bps).

　　

　　* GFSK modulation method

　　

　　* transparent transmission mode

　　

　　* Built-in watchdog to ensure long-term reliable operation.

　　

　　* UART/TTL, RS232 and RS485 interfaces

　　

　　* Convenient and flexible software programming

　　

　　* Large 512bytes data buffer.

　　

　　* Suitable for built-in installation

　　

　　Scope of application:

　　

　　* Automatic meter reading and charging system for water, electricity, gas and heating;

　　

　　* intelligent wireless PDA terminal;

　　

　　* Wireless queuing equipment;

　　

　　* burglar alarm;

　　

　　:: Smart cards;

　　

　　* Automatic control of medical and electronic instruments;

　　

　　* Intelligent teaching equipment;

　　

　　* Intelligent control of household appliances and lighting;

　　

　　* wireless hanging scale, electronic scale for wireless transmission;

　　The article “target=”_blank” > registering TG Chinese version (Telegram Chinese version) is a relatively simple task, but some details need to be paid attention to. The following will provide detailed steps and solutions to help users easily complete registration.know telegram下载 The market will definitely bring great influence to the whole industry. https://cytafex.com/

　　

　　Related questions:

　　

　　How to ensure that your mobile phone can install TG Chinese version?

　　

　　What information do I need to register the Chinese version of TG?

　　

　　How to solve the common problems encountered in the registration process?

　　

　　solution

　　

　　Check equipment compatibility

　　

　　facility request

　　

　　Confirm whether the mobile phone system supports TG Chinese version. Android users need to ensure that the operating system is at version 5.0 or above. IOS users need to run iOS 9.0 or later.

　　

　　Enter the settings menu of the mobile phone to view the current system version.

　　

　　If the equipment version is lower than the required level, consider upgrading or replacing the equipment.

　　

　　Visit the corresponding app store to ensure that you can find and download the article “target=”_blank” > download the Chinese version of TG.

　　

　　Collect registration information

　　

　　information needed

　　

　　Basic information needed to complete registration includes mobile phone number and verification code:

　　

　　Use a valid mobile phone number to ensure that it can receive short messages.

　　

　　During the registration process, the system will send a short message containing the verification code, so be sure to keep this number.

　　

　　Solve the registration problem

　　

　　Common problems and solutions

　　

　　Several common problems may be encountered during the registration process, such as not receiving the verification code:

　　

　　Make sure the cell phone signal is good, and make sure that you can receive the short message.

　　

　　If the verification code is not received, you can choose to resend it.

　　

　　If you still can’t register, check whether the mobile phone number used is within the support range of TG Chinese version.

　　

　　Detailed explanation of steps

　　

　　Download and install TG Chinese version

　　

　　To ensure smooth registration, download the correct Chinese version of TG.

　　

　　Search for the article “target=”_blank” > Chinese version of paper airplane “in the app store of mobile phone.

　　

　　Click the download button and wait for the installation to complete.

　　

　　After the installation is completed, open the application and prepare for registration.

　　

　　Register

　　

　　After opening the application, follow the instructions on the screen to register.

　　

　　Enter the mobile phone number and make sure that the country code in front is correct.

　　

　　Click “Get Verification Code” and wait for SMS notification.

　　

　　Enter the received verification code. If it is correct, the registration process will be completed automatically.

　　

　　Complete configuration and personal settings

　　

　　After successful registration, you can make personalized settings.

　　

　　Set personal information, including user name and avatar.

　　

　　Configure privacy settings to ensure the security of personal information.

　　

　　Add friends or create groups, and start using TG Chinese version.

　　

　　Successfully downloading and registering the Chinese version of TG can provide users with an efficient and safe communication tool. Through simple steps, users can quickly launch applications and connect friends and family. You can also enrich the experience by accessing some additional resources, such as the link of application download. Whether chatting or file transfer, TG Chinese version provides a stable platform for users. If you encounter problems during operation, refer to relevant solutions to ensure smooth use.

　　Smart advertising machines have long been widely used in the healthcare field. Now let¨s turn our attention to smart advertising machines in clinics. Although clinics are not as busy as hospitals, there is still a lot of information to be conveyed. Smart advertising machines can help clinics provide better services to customers in many ways.Without exception, led outdoor display Our customers are willing to purchase their products, because high quality is the concept of their products. https://chestnuter.com/

　　

　　smart advertising machines

　　

　　Ways to Serve Customers

　　

　　1. Daily Health Tips

　　

　　Set up an easily visible screen in the waiting area or consultation room to display daily health tips, including nutrition, chronic disease management, etc. You can also share some interesting content so that customers can gain health knowledge in a relaxed atmosphere.

　　

　　2. Seasonal health alerts

　　

　　Provide corresponding health advice according to different seasons, such as allergy protection in spring, sun protection and moisturizing in summer, and disease prevention in winter.

　　

　　3. Product and service promotion

　　

　　Introduce the products and services provided by the clinic, including basic medicines, new products, etc. By making attractive slides, show the characteristics, efficacy and usage of the products.

　　

　　4. General Medication Information and Guidelines

　　

　　Inform customers of general medication guidelines, such as when to take medication, whether to take with food, and what to do if you forget to take medication or take an overdose. For new or prescribed medications, provide more detailed information, including instructions for use, potential side effects and interactions, etc.

　　

　　5. Scheduling Appointments

　　

　　If the clinic offers additional services, such as health checks, vaccinations, etc., list these services on the smart advertising machine so that customers can learn about them and make appointments.

　　

　　6. Prescription preparation notification

　　

　　Use the screen to notify customers of the prescription preparation status and reduce the waiting time of customers. At the same time, promote online booking services to facilitate customers to start consultations at home and reduce waiting time in the clinic.

　　

　　Notes

　　

　　1. Evaluate customer needs

　　

　　Understand customer interests and needs, display relevant content in a targeted manner, and improve customer engagement and satisfaction.

　　

　　2. Be concise and clear

　　

　　The content should be concise and easy to understand, avoiding overly professional terms and complex sentence structures.

　　

　　3. Update in a timely manner

　　

　　Update the content of the smart advertising machine in a timely manner according to changes in seasons, products and services to keep the information fresh and accurate.

　　

　　4. Interactivity

　　

　　Add interactive elements, such as touch screens, QR codes, etc., so that customers can obtain more information independently.

　　

　　In short, the clinic smart advertising machine is an effective information dissemination tool that can help the clinic improve service quality and enhance customer satisfaction and loyalty. By making reasonable use of smart advertising machines, clinics can provide customers with more personalized, convenient and considerate services.

　　The most basic usage of GPRS DTU is: put a SIM card with GPRS function in DTU, after DTU is powered on, first register to GPRS network, and then establish connection with data processing center through GPRS network. After the GPRS DTU is powered on, first read the working parameters saved in the internal FLASH (including GPRS dialing parameters, serial baud rate, IP address of data center, etc., which have been configured in advance).for a long time RF Module It has an extraordinary development speed, and I believe that the future will be as overwhelming as ever. https://www.hkulike.com/

　　

　　GPRS DTU logs into GSM network, and then dials GPRS PPP. After successful dialing, GPRS DTU will get an internal IP address randomly assigned by Mobile. That is to say, GPRS DTU is in the mobile intranet, and its intranet IP address is usually not fixed and changes with each dial. We can understand that GPRS DTU is a mobile device in the internal LAN, and it communicates with the external Internet public network through the mobile gateway. This is similar to the way that computers in a local area network access external networks through gateways.

　　

　　GPRS DTU actively initiates communication connection with data center, and keeps communication connection always existing. Because GPRS DTU is in the mobile intranet and the IP address is not fixed. Therefore, only GPRS DTU can actively connect to the data center, but not the data center. This requires the data center to have a fixed public IP address or a fixed domain name. The public IP address or fixed domain name of the data center is stored as a parameter in the GPRS DTU, so that once the GPRS DTU is powered on and dialed successfully, it can actively connect to the data center.

　　

　　Specifically, GPRS DTU sends TCP or UDP communication requests to the data center through the IP address and port number of the data center. After receiving the response from the center, GPRS DTU thinks that the handshake with the center is successful, and then keeps this communication connection. If the communication connection is interrupted, GPRS DTU will immediately shake hands with the center again.

　　

　　Since the TCP/UDP communication connection has been established, two-way data communication can be carried out.

　　

　　For DTU, as long as the two-way communication with the data center is established, it is relatively simple to complete the conversion between user serial data and GPRS network data packets. Once receiving the user’s serial data, DTU immediately encapsulates the serial data in a TCP/UDP packet and sends it to the data center. Conversely, when DTU receives the TCP/UDP packet from the data center, it takes out the data content and immediately sends it to the user equipment through the serial port.

　　

　　Through the wired data acquisition center, it communicates with many GPRS DTU in two directions at the same time. This is the most commonly used way in GPRS DTU application system at present.

　　There are various types of fiber optic cables available on the market, differing in size, shape, color, structure, and material. Choosing the right fiber optic cable can be challenging, but this article offers some tips to help you make the best decision.As an important brand soul of the company, fiber optic patch cable Has outstanding performance, through the market test, still has a strong development trend. https://kechengdg.com/

　　

　　optical cable

　　

　　What is Fiber Optic Cable?

　　

　　Fiber optic cables transmit data in the form of light pulses through flexible, optically pure glass. These cables consist of five main components: the core, cladding, coating, strength members, and outer jacket.

　　

　　- Core: Made of high-purity silica (SiO2) with a small amount of dopants, the core is responsible for transmitting light pulses generated by lasers or light-emitting diodes (LEDs).

　　

　　- Cladding: This thin layer of glass surrounds the core and has a different refractive index to reflect light back into the core, allowing the signal to propagate.

　　

　　- Coating: Designed to absorb shock, prevent excessive bending, and protect the core.

　　

　　- Strength Members: These components shield the core from excessive tension and compression, particularly during installation.

　　

　　- Outer Jacket: Provides protection from external factors like shock, moisture, and other environmental influences.

　　

　　optical cable

　　

　　Tips for Choosing the Right Fiber Optic Cable

　　

　　1. Cable Type

　　

　　First, determine whether you need single-mode (SM) or multimode (MM) fiber optic cable based on your network application and specifications. Generally, SM fiber is ideal for long-distance and outdoor applications, while MM fiber is suited for short-distance and indoor use.

　　

　　2. Fiber Core Count

　　

　　After selecting the fiber type, calculate the number of fibers needed for your network. This depends on the scale of your FTTX (Fiber to the x) and ODN (Optical Distribution Network) projects and the type of fiber optic cable you plan to use. Backbone cables typically range from 24 to 288 cores, while distribution cables require fewer cores. FTTH home cables usually have 1 or 2 cores.

　　

　　3. Deployment Environment

　　

　　Consider the structure and material of the fiber optic cable based on its deployment location:

　　

　　- Outdoor:

　　

　　For direct burial, loose tube layer-stranded armored fiber optic cables offer the best protection. In overhead environments, self-supporting cables that can bear their own weight, such as figure-8 or ADSS cables, are ideal.

　　

　　- Indoor:

　　

　　Flame-retardant, low-smoke, halogen-free (LSZH) cables are essential for indoor use. In duct environments, choose cables with flame-retardant and LSZH properties. For exposed indoor environments, the same LSZH cables are required. Tight-buffered optical fibers, known for their small bending diameter, softness, and easy stripping, are well-suited for indoor applications.

　　

　　- Buildings:

　　

　　When laying cables vertically or horizontally within a building, tight-buffered, bundled (D-type), or branched (B-type) optical cables are recommended.

　　

　　4. Connectors

　　

　　Connectors are crucial for establishing a secure fiber optic network. Common types include ST, FC, SC, LC, and MTP/MPO connectors.

　　

　　- ST: Popular in telecommunication networks, spring-loaded for easy connection and removal.

　　

　　- FC: Threaded body, ideal for high-vibration environments, polarized fiber, and SM fiber.

　　

　　- SC: Snap-on connector, commonly used in SM fiber, duplex networks, CATV, media converters, and FTTX.

　　

　　- LC: A standard ceramic ferrule connector, half the size of SC, used in SM fiber, data centers, LANs, FTTH, and CATV.

　　

　　- MTP/MPO: High-performance multi-core connectors for data centers.

　　

　　optical cable

　　

　　Summary

　　

　　When selecting a fiber optic cable, consider the cable type, fiber core count, deployment environment, and connectors. By evaluating these factors, you can confidently choose the most suitable fiber optic cable for your needs.

　　In today’s era, many users choose to use Telegram/” title= “Click to learn more about [Telegram” target=_blank>” target=”_blank”>Telegram for social communication. In order to make better use of this platform, many users want to translate the article “target=”_blank” > in Chinese, which will make it easier to operate. This article will introduce in detail how to realize the sinicization of the article “target=”_blank” > Chinese version of Telegram on Android and iOS devices.In the eyes of peers, 电报 It has good qualities that people covet, and it also has many loyal fans that people envy. https://cytafex.com/

　　

　　relevant issues

　　

　　What should I do if I encounter mistakes in the process of sinicization?

　　

　　How to ensure the stability of Chinese version?

　　

　　What should I pay attention to when downloading the localization package?

　　

　　solution

　　

　　Back up data regularly to avoid software damage caused by localization.

　　

　　Use official channels to download the localization package to ensure software security.

　　

　　If there is a problem, uninstall and reinstall it in time to solve the problem.

　　

　　Detailed steps

　　

　　Download localization package

　　

　　Before localization, users need to download localization packages suitable for their own devices in major application markets or related websites.

　　

　　You can use resources such as Telegram download to find related Chinese options.

　　

　　It is very important to choose the appropriate version to ensure that the selected Chinese package is compatible with the operating system of the device.

　　

　　Install localization package

　　

　　After the download is completed, find the downloaded file and click Install.

　　

　　During the installation process, users need to allow the required permissions so that the software can make necessary changes.

　　

　　Note: If there is a security prompt, check the source of the localization package to prevent downloading the unofficial version.

　　

　　Set language options

　　

　　After the installation, open the Telegram application, enter the Settings option, and select the language settings.

　　

　　You can see a variety of language options here. Select Chinese, and the interface will be adjusted to Chinese.

　　

　　After applying the changes, restart the Telegram application to ensure that the settings take effect.

　　Cable knowledge, cable people most need the knowledge of fine solutionOn the other hand, network cable It also brings tangible benefits to everyone and feels useful. It is a model of the industry. https://kechengdg.com/

　　

　　cable knowledge

　　

　　1. What requirements should the design of cable joints and intermediate heads meet? The requirements to be met are:

　　

　　(1) High compressive strength, good conductor connection;

　　

　　(2) large mechanical strength, small medium loss;

　　

　　(3) Simple structure, strong sealing.

　　

　　2. Where are the inner shielding layer and outer shielding layer of the power cable? What material is used? What does it do?

　　

　　In order to make the insulation layer and the cable conductor have better contact and eliminate the increase in the electric field strength of the conductor surface caused by the unsmoothness of the conductor surface, the conductor surface is generally covered with an internal shielding layer of metalized paper or semiconductor paper tape. In order to make the insulation layer and the metal sheath have better contact, there is generally an outer shielding layer on the surface of the insulation layer. The outer screen layer is the same material as the inner screen layer, and sometimes copper tape or braided copper wire tape is tied outside.

　　

　　3. Which aspects should be considered in choosing the section of power cable? The following aspects should be considered:

　　

　　(1) The working current allowed through the cable for a long time;

　　

　　(2) Thermal stability once short-circuited;

　　

　　(3) The voltage drop on the line cannot exceed the allowable working range.

　　

　　4. cable in the transportation and loading process should pay attention to what?

　　

　　(1) In the transportation and loading process, the cable and cable tray should not be damaged, it is strictly prohibited to push the cable tray directly from the car, the cable should not be flat transport, flat storage.

　　

　　(2) Before transporting or rolling the cable tray, it must be ensured that the cable tray is firm, the oil pipe between the cable wound and the oil-filled cable and the pressure tank should be fixed and not damaged, the pressure tank should be firm, and the pressure indication should meet the requirements.

　　

　　5. What are the requirements for bending the cable core when making the cable head?

　　

　　When bending the wire core, the paper insulation shall not be damaged, and the bending radius of the core wire shall not be less than 10 times that of the cable core. Special care should be taken when making, and the bending part of the wire core should be evenly stressed, otherwise it is easy to damage the insulation paper.

　　

　　6. briefly describe the plastic cable heat shrink sealing method.

　　

　　The heat shrink method is suitable for the sealing of medium and low voltage rubber and plastic cable joints and terminal heads, and can also be applied to non-dripping and viscous impregnated insulated cables. Two kinds of heat shrinkable tubes, crosslinked polyethylene type and silicone rubber type, which can shrink evenly when exposed to heat, are adopted. The tube is covered in the predetermined adhesive sealing part, and the adhesive part is coated with hot melt adhesive, when heated to a certain temperature, the heat shrink tube will shrink, and the hot melt adhesive will melt, and a good sealing layer will be formed after natural cooling.

　　

　　7. What should be paid attention to when bending cable protection tubes with electric pipe bending machine?

　　

　　(1) The pipe bending machine should be operated by personnel who understand its performance and are familiar with the operation knowledge;

　　

　　(2) It must be checked before use, the button, the operation handle, the stroke switch should be in good condition, and the pipe bender must be reliably grounded;

　　

　　(3) Select the mold that meets the requirements and determine the required bending radius;

　　

　　(4) There should be sufficient scope of activity around the construction site;

　　

　　(5) When the idling is normal, it can work with load. During operation, it is forbidden to touch the rotating part with hands and feet;

　　

　　(6) After the work is completed, the power should be cut off in time to release the oil pressure.

　　

　　For more cable professional information, procurement, supply information please contact us.

　　1. List of questions and alliance answers for operators to deploy NB-IoTfrom RF Module Looking at the development prospects, the future will always bring positive effects. https://www.hkulike.com/

　　

　　How is the network architecture of NB-IoT composed?

　　

　　Building vertical industry application of Internet of Things based on NB-IoT technology will tend to be simpler and the division of labor will be clearer.

　　

　　How do domestic and foreign operators divide the frequency bands of NB-IoT?

　　

　　Most operators in the world use the 900MHz frequency band to deploy NB-IoT, and some operators deploy it in the 800MHz frequency band. China Unicom’s NB-IoT is deployed in 900MHz and 1800MHz frequency bands, and only 900MHz can be tested at present. In order to build the NB-IoT Internet of Things, China Mobile will obtain the FDD license and allow the existing 900MHz and 1800MHz frequency bands to be re-cultivated. China Telecom’s NB-IoT is deployed in the 800MHz band, with a frequency of only 5MHz.

　　

　　NB-IoT network deployment schedule?

　　

　　In 2016, China Unicom launched NB-IoT field-scale networking tests based on 900MHz and 1800MHz in seven cities (Beijing, Shanghai, Guangzhou, Shenzhen, Fuzhou, Changsha and Yinchuan), as well as more than six business application demonstrations. In 2018, the commercial deployment of NB-IoT will be fully promoted nationwide. China Mobile plans to start the commercialization of NB-IoT in 2017. China Telecom plans to deploy NB-IoT network in the first half of 2017. Huawei and six operators (China Unicom, China Mobile, Vodafone, Emirates Telecom, Telefonica and Italia Telecom) set up six NB-IoT open laboratories around the world, focusing on NB-IoT business innovation, industry development, interoperability testing and product compatibility verification. ZTE and China Mobile completed the technical verification demonstration of NB-IoT protocol in the laboratory of China Mobile’s 5G Joint Innovation Center.

　　

　　Can non-operators deploy NB-IoT networks?

　　

　　The answer is no.

　　

　　Does NB-IoT need real-name registration system?

　　

　　All needs, tracked to the responsible subject.

　　

　　Does NB-IoT all adopt eSIM?

　　

　　The product features of NB-IoT are that it can work without installation and configuration, and it can be directly connected to the network by booting, and it supports functions such as automatic equipment registration and air upgrade. SIM card and eSIM will coexist for a long time, and operators refuse the soft SIM mode.

　　

　　What is the operator’s plan to quit the 2G/3G network?

　　

　　China Unicom may gradually close its 2G network in 2018, and in some places it may close its 3G network. Japan’s mobile operators have all shut down 2G networks, and AT&T in the United States, Telstra and Optus in Australia have announced plans to shut down 2G networks. Telenor plans to close its 3G network in Norway in 2020, followed by its 2G network in 2025. Some operators consider that there are more than 100 million GPRS IOT terminals and low-end GSM mobile phones for a long time, and the cost of GSM is lower than that of LTE for a long time because of its low complexity and no patent fees. Therefore, most operators will maintain the GSM frequency band to continue their operations for a long time.

　　

　　Do operators support NB-IoT roaming?

　　

　　The answer is no.

　　

　　How can operators ensure the stability of NB-IoT network?

　　

　　NB-IoT is directly deployed in GSM, UMTS or LTE networks, which can be reused with existing network base stations to reduce deployment costs and achieve smooth upgrade. However, the use of a separate 180KHz frequency band does not occupy the voice and data bandwidth of existing networks, ensuring that traditional services and future Internet of Things services can be carried out stably and reliably at the same time.

　　

　　The control and bearer of NB-IoT are separated, with signaling on the control plane and data on the bearer plane. If it is a low-rate service, it goes directly to the control plane, and no dedicated bearer is established, which omits the signaling process of establishing a link between NAS and the core network and shortens the wake-up recovery delay. NB-IoT is an operational telecommunications network. This is the key to distinguish NB-IoT from GPRS, LoRa, SigFox and other technologies.

　　

　　How can operators make use of NB-IoT network to make profits?

　　

　　Operators’ existing areas such as QoS service quality assurance, network security, telecom-level billing and big data services continue to maintain their industry advantages. NB-IoT network allows operators to strengthen their business service capabilities in the field of Internet of Things, including cloud service provision, mass customer management, real-name authentication of Internet of Things, system general contracting integration, and high-end customized services for large customers.

　　

　　Price issues related to NB-IoT?

　　

　　Operator’s charges: one is based on flow and the other is based on message, and the trend will be lower than the price of GPRS cost chip: lower than the price of 2G main chip, with a reasonable expected price of $1. Module price: lower than the price of GPRS module, with a reasonable expected price of $2. Terminal price: pricing maintenance cost according to actual function: far lower than the existing network maintenance cost subsidy policy: operators will provide larger operating subsidies in the early stage.

　　

　　2. List of questions and answers about NB-IoT technology.

　　

　　Will NB-IoT standard support TDD LTE?

　　

　　At present, FDD LTE system supports NB-IoT technology, while TDD LTE system does not support NB-IoT technology. The physical layer design of NB-IoT mostly follows LTE system technology, such as SC-FDMA for uplink and OFDM for downlink. The design of high-level protocol follows LTE protocol, and its function is enhanced according to its small data packet, low power consumption and large connection characteristics. The core network is connected based on S1 interface, which supports independent deployment and upgrade deployment.

　　

　　Does NB-IoT support base station positioning?

　　

　　R13 does not support base station location, but the operator network can do private solutions, such as location based on cell ID, which will not affect the terminal, and only need the network to increase the location server and contact with the base station. R14 plans to enhance positioning, supporting E-CID, UTDOA or OTDOA, and the operator’s desired positioning accuracy target is within 50 meters.

　　

　　Considering the terminal complexity, UTDOA is better, because it has little influence on the terminal, and in the case of enhanced coverage (basement 164dB), UTDOA (uplink) power consumption is lower; If coverage enhancement is not needed in most scenarios, OTDOA (downlink) will be better from the perspective of network capacity.

　　

　　What are the deployment methods of NB-IoT?

　　

　　NB-IoT supports three different deployment modes, namely independent deployment, guard band deployment and in-band deployment. Independent deployment: A separate frequency band can be used, which is suitable for re-cultivation in GSM frequency band. Guard band deployment: The marginal useless frequency band in LTE system can be utilized. In-band deployment: Any resource block in the middle of LTE carrier can be utilized.

　　

　　What modulation and demodulation technology does NB-IoT use?

　　

　　OFDMA is used for downlink, and the subcarrier spacing is 15kHz. The uplink adopts SC-FDMA, single-tone: 3.75kHz/15kHz, and multi-tone: 15kHz. Only need to support half duplex, with a separate synchronization signal. The terminal supports the indication of Single-tone and Multi-tone capabilities. The MAC/RLC/PDCP/RRC layer processing is based on the existing LTE processes and protocols, and the physical layer is optimized.

　　

　　What are the number of connected users and active users of NB-IoT base station?

　　

　　NB-IoT has 50-100 times the uplink capacity improvement compared with 2G/3G/4G, and NB-IoT can provide 50-100 times the access number compared with the existing wireless technology under the same base station. Under the frequency of 200KHz, according to the simulation test data, a single base station cell can support 50,000 NB-IoT terminals to access.

　　

　　What is the coverage of NB-IoT base station?

　　

　　NB-IoT has a gain of 20dB higher than that of LTE and GPRS base stations, and it is expected to cover underground garages, basements, underground pipelines and other places where signals are difficult to reach. According to the simulation test data, in the independent deployment mode, the coverage capacity of NB-IoT can reach 164dB, and the in-band deployment and guard band deployment need to be simulated and tested.

　　

　　What is the uplink and downlink transmission rate of NB-IoT?

　　

　　NB-IoT RF bandwidth is 200kHz. Downlink rate: greater than 160kbps and less than 250kbps. Uplink rate: greater than 160kbps and less than 250 kbps (multi-tone)/200 kbps (single-tone).

　　

　　Does NB-IoT support retransmission mechanism?

　　

　　NB-IoT adopts retransmission (up to 200 times) and low-order modulation to enhance coverage.

　　

　　Does NB-IoT support voice?

　　

　　NB-IoT supports Push to Talk without coverage enhancement. In the scenario of enhanced coverage of 20dB, only similar voicemails can be supported. NB-IoT does not support VoLTE, which requires too high delay, and the high-level protocol stack needs QoS guarantee, which will increase the cost.

　　

　　Why does the chip of NB-IoT consume low power?

　　

　　The energy consumed by a device is related to the amount or rate of data, and the size of data packets sent per unit time determines the size of power consumption. NB-IoT introduces eDRX power saving technology and PSM power saving mode, which further reduces power consumption and prolongs battery life. NB-IoT can keep devices online all the time, but it can save power by reducing unnecessary signaling and not accepting paging information when in PSM state.

　　

　　In PSM mode, the terminal is still registered in the network, but the signaling is unreachable, which makes the terminal stay in deep sleep for a longer time to save electricity. EDRX power saving technology further prolongs the sleep period of the terminal in idle mode, reduces unnecessary startup of the receiving unit, and greatly improves the downlink accessibility compared with PSM.

　　

　　Does NB-IoT sleep wake-up mode affect battery life?

　　

　　At present, the working time given by NB-IoT is based on simulation data, without considering the battery itself and environmental factors, such as self-discharge and aging of the battery, high and low temperature environmental impact, etc. In actual use, it is necessary to comprehensively evaluate the power supply time of the battery according to the actual situation. NB-IoT adopts the power-saving scheme of sleep wake-up. When the battery is awakened during sleep, it will receive instantaneous strong current, which will greatly affect the battery life. The application of meter reading usually adopts lithium thionyl chloride (Li/SOCl2) battery and super capacitor. Consumer electronics and others should be powered by li-polymer.

　　

　　Why are NB-IoT chips cheap?

　　

　　Low speed, low power consumption and low bandwidth bring low cost advantages. Low speed: it means that no large cache is needed, so the cache can be small and the DSP configuration is low; Low power consumption: it means that RF design requirements are low, and small PA can be realized; Low bandwidth: It means that there is no need for complicated equalization algorithm … These factors make the NB-IoT chip small, so the cost will be reduced.

　　

　　Taking a certain chip as an example, NB-IoT chip integrates BB, AP, Flash and battery management, and reserves the function of sensor set. The AP includes three ARM-M0 cores, and each M0 core is responsible for the application, security and communication functions respectively, which facilitates the function management and reduces the cost and power consumption.

　　

　　What is the range of NB-IoT to the device movement rate?

　　

　　NB-IoT is suitable for application scenarios with weak mobility support (such as intelligent meter reading, intelligent parking, etc.), while simplifying the complexity of the terminal and reducing the power consumption of the terminal. NB-IoT does not support mobility management in connected state, including related measurement, measurement report, handover, etc.

　　

　　What is the network delay of NB-IoT?

　　

　　NB-IoT allows a delay of about 10s, but it can support a lower delay, such as about 6s, in the environment of maximum coupling loss.

　　

　　3. Deployment of NB-IoT technology in various vertical application fields of the Internet of Things.

　　

　　What is the deployment cost of NB-IoT vertical application?

　　

　　The deployment cost of NB-IoT vertical application field includes hardware cost, network cost, installation cost and service cost. If we want to realize the scale of application field, we must reduce the deployment cost.

　　

　　What is the focus of NB-IoT in vertical application field?

　　

　　NB-IoT technology can meet the requirements of low-rate services with low power consumption, long standby, deep coverage and large capacity, and is more suitable for static services, low sensitivity to time delay, discontinuous movement and real-time data transmission. 1. Autonomous anomaly reporting business types: such as smoke alarm detectors, abnormal equipment operation, etc. The uplink data volume is extremely small (on the order of ten bytes), and the cycle is mostly in years and months. 2. Business types of autonomous periodic reporting: such as remote meter reading of public utilities and environmental monitoring, etc. The uplink data volume is small (on the order of 100 bytes), and the cycle is mostly in days and hours. 3. Service type of remote control instruction:

　　

　　For example, if the equipment is turned on/off remotely, and the equipment triggers to send an uplink report, the downlink data amount is very small (on the order of ten bytes), and the cycle is mostly in days and hours. 4. Software remote update service type: such as software patch/update, and the uplink and downlink need a large amount of data (kilobyte level), and the cycle is mostly in days and hours.

　　With the popularity of social platforms and instant messaging tools, the article “target=”_blank” > telegraph, as an open communication tool, is increasingly loved by users. While enjoying its convenience, users may face some problems, especially when seeking a secure and stable connection. The article “target=”_blank” > The use of proxy account has become an important topic. This article will help you understand how to obtain and manage telegraph agency accounts.As an important brand soul of the company, telegram下载 Has outstanding performance, through the market test, still has a strong development trend. https://cytafex.com/

　　

　　Related questions:

　　

　　How to choose the right telegraph agent account?

　　

　　How to improve the privacy and security of telegraph proxy account?

　　

　　What are the common problems when using telegraph proxy account?

　　

　　Step 1: Select the appropriate telegraph agent account.

　　

　　Determine the demand. It is very important to know your needs before choosing a telegraph agent account. If it is only used for daily chat, ordinary agents can meet the demand; If privacy needs to be protected in a sensitive environment, it is more suitable to choose a proxy with high anonymity.

　　

　　Common requirements include improving access speed, bypassing geographical restrictions, and enhancing privacy. Different proxy types (such as SOCKS5, HTTP, HTTPS) have different characteristics.

　　

　　For users who are looking for speed, it is recommended to use SOCKS5 agent, whose performance is excellent when dealing with a large amount of data.

　　

　　Find a reliable agent provider. After investigation and study, it is the key to choose a reputable agent service provider. The quality of agency service can be evaluated by user feedback and website evaluation.

　　

　　Many service providers offer probation periods so that users can experience the quality of service and take advantage of these opportunities to test.

　　

　　Some well-known software platforms (such as application download) often recommend excellent agent purchase channels.

　　

　　Purchase an agent account. After choosing a suitable agent provider, you can make a purchase according to the steps provided by it.

　　

　　Enter the required service plan on the purchase website and follow the prompts to complete the payment. Most platforms support multiple payment methods.

　　

　　After purchase, you will receive the agent account number, password and other necessary information.

　　

　　Step 2: Set the telegraph proxy account.

　　

　　Open the telegraph application. Make sure that the latest version of the telegram is installed on your mobile phone, tablet or PC.

　　

　　For PC users, you can go to Telegraph official website to download the article “target=”_blank” > to download the latest version, and try to avoid using outdated versions of applications.

　　

　　If you need to use an agent, you will usually choose the Chinese version of the telegram or the Chinese version of the paper plane.

　　

　　Enter the setting interface. After opening the telegram, click the menu button in the upper left corner, and then select “Settings”.

　　

　　Find the “Data and Storage” option in the setting interface, and click Enter.

　　

　　Locate “Agent Settings” and select “Add Agent”.

　　

　　Enter the agent information. Enter the proxy address, port, user name and password obtained from the proxy provider in the pop-up dialog box.

　　

　　Note: Make sure that the information is correct. Any error will cause the agent to fail to connect normally.

　　

　　When finished, click “Save”. Whether the information read is accurate or not can be verified by refreshing the page.

　　

　　Step 3: Test and optimize the proxy connection.

　　

　　Test the proxy connection. Once the settings are successful, you can select a chat window and try to send a message to verify whether the proxy connection is smooth.

　　

　　During use, observe the status of message sending. If there is an error prompt, check whether the information just entered is accurate.

　　

　　You can further test the stability of the connection by watching videos or participating in voice chat.

　　

　　Optimize the connection settings. According to your own experience, you can consider trying different proxy settings.

　　

　　In some cases, changing the proxy type (such as changing from HTTP to SOCKS5) will bring faster connection speed.

　　

　　If there is frequent disconnection during use, try to change a different agent or contact the agent provider.

　　

　　Record the use experience. In the long run, write down which agents perform well and which are unstable, so that you can refer to these data when choosing.

　　

　　Update the proxy information regularly to ensure that you can continue to enjoy better connection effect.

　　

　　Sharing your experience with other telegraph users can not only speed up your personal learning process, but also help others find solutions.

　　

　　In the process of using the telegraph proxy account, it is very important to choose the appropriate proxy, set the correct settings and test the connection. With the constantly updated demand and technology, keeping learning and adapting is the key to effectively use the autumn service. With the convenience provided by the agent, users can communicate and exchange information with greater peace of mind. For users who are keen on telegrams, try different proxy schemes to improve privacy and experience. In the process of using telegrams, make sure that you download all the telegraphic application versions of regular channels, enjoy smooth service, and at the same time protect your own information security.

　　In recent years, commercial outdoor digital advertising machines have become an important tool for enterprises to improve customer experience and increase revenue. These interactive touch screen displays offer multiple advantages over traditional signage and paper advertising. This article will explore how outdoor advertising can significantly increase retail store traffic and contribute to business success.So, advertising screen On the contrary, there is still a lot of room to play. https://chestnuter.com/

　　

　　outdoor digital advertising

　　

　　Understanding Commercial Outdoor Digital Signage

　　

　　Before we dive into the benefits of commercial outdoor digital signage, let¨s first understand their basic concepts. Commercial outdoor digital signage is a large interactive display placed outside a business or in high-traffic areas that combines high-quality graphics and video with touchscreen technology to create a memorable and engaging experience for customers.

　　

　　Types of Commercial Outdoor Digital Signage

　　

　　You can select from many types of commercial outdoor digital signage based on the needs of your business. Floor-standing signage, all-in-one interactive signage, and wall-mounted signage are some common examples. Each type of display provides unique benefits; therefore, you can customize them to meet specific goals and enhance their effectiveness.

　　

　　Vertical advertising machine: Suitable for businesses that provide information or services in a specific location.

　　

　　Interactive all-in-one machine: Helps customers navigate complex environments, provides maps and directions, and can also display information about nearby stores or restaurants.

　　

　　Wall-mounted advertising machines: Used to display advertising and promotional content, these screens are updated in real time to reflect inventory or pricing changes; thus, they attract customer attention and increase sales.

　　

　　Commercial outdoor digital advertising machines are a powerful tool for driving traffic to retail stores. Based on this powerful tool, companies can achieve greater customer attraction; consequently, they can also realize more business success.